401(k) · DOL Form 5500 · 2023
Ameren Corporation 401(k) Plan
Data updated 2026-08-25
- $3.0B
- Total assets Very large vs avg
- 9,356
- Participants Very large workforce
- 100th
- Percentile by assets National rank
- $317,602
- Avg per participant High balance/head
Official DOL plan name: Ameren Corporation Savings Investment Plan · Sponsored by Ameren Corporation · Missouri · Utilities
$3.0B in assets, 9,356 participants
Ameren Corporation's Ameren Corporation Savings Investment Plan reported $3.0B in total assets and 9,356 participants in its 2023 DOL Form 5500 filing, ranking in the 100th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.
- #686 in Utilities (721 peers)
Coverage in Missouri
Ameren Corporation Savings Investment Plan covers 9,356 participants in Missouri, 13x the typical Missouri plan (state average ~737 per filing). Assets: $3.0B.
- #686
- in Utilities (721 peers)
- +8.8%
- assets growth YoY
- 30×
- vs typical plan assets (national mean)
Ameren Corporation Savings Investment Plan's outsized position by total assets
Ameren Corporation Savings Investment Plan vs every filed plan by assets
End-of-year total assets · plan year 2023 · DOL Form 5500
$2,971,481,023 Highest reported value at or above every one of 127,068 filed plans
Dashed line + filled bar = this entry, among filed plans.
Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023
Ameren Corporation Savings Investment Plan's large-plan peer group by participant headcount
Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Ameren Corporation Savings Investment Plan lands in the large band (9,356 participants).
What changed between DOL Form 5500 filings
plan year 2022 → plan year 2023
- Ameren Corporation Savings Investment Plan reported net income fell from $422M in the plan year 2022 filing to $236M in the plan year 2023 filing.
- Ameren Corporation Savings Investment Plan end-of-year assets rose from $2.7B in the plan year 2022 filing to $3.0B in the plan year 2023 filing.
- Ameren Corporation Savings Investment Plan reported participants rose from 8,851 in the plan year 2022 filing to 9,356 in the plan year 2023 filing.
Form 5500 schedule snapshot
Filing strip 431723446 · Ameren Corporation PY 2023 · 401(k)
Ameren Corporation Savings Investment Plan · $3.0B · 9,356 · 100th
- TYPE $3.0B
- TYPE 9,356
- TYPE 100th
- TYPE 401(k)
- TYPE near Wsp USA Retirement Savings Plan
- TYPE ind #686
Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Utilities retirement plans → · Plans in Missouri →
Ameren Corporation Savings Investment Plan in the asset neighbourhood
Missouri filing particulars
| Total Assets (Beginning of Year) | $2.7B |
|---|---|
| Net Assets (End of Year) | $3.0B |
| Net Income | $236M |
| Employer EIN | 431723446 |
| Plan Effective Date | 1984-07-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Ameren Corporation)
Sponsor-wide plan assets over time
All Ameren Corporation plans reported in each filing year
- Latest sponsor-wide plan assets
- $8.0B 18.962225529961195% vs 2022
- 2024 filing year
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 3 | 28,238 | $9.9B |
| 2023 | 2 | 19,512 | $7.7B |
| 2024 | 2 | 19,264 | $8.0B |
Nearby 401(k) Plans in Missouri
Peer 401(k) plans, same state, same plan type, ranked by total assets.
- Edward D. Jones & Co. Profit Sharing and 401(k) Plan $10.6B · 49,944
- Bayer Corporation Savings and Retirement Plan $10.3B · 19,273
- Enterprise Holdings Retirement Savings Plan $5.6B · 66,210
- Centene Management Corporation Retirement Plan $4.0B · 53,822
- Emerson Electric Company Employee Savings Investment Plan $3.6B · 10,316
Scale composition for Ameren Corporation Savings Investment Plan
Ameren Corporation Savings Investment Plan reports $3.0B in end-of-year assets across 9,356 participants (0.024% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.010% of 93,925,755 covered participants) - about $317,602 per participant (2.3x the national average assets-per-participant) . Net income for plan year 2023 was $236M.
This plan identity (EIN 431723446, plan #003) has 4 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $2.7B to $3.2B (+17.5%) while covered participants moved from 9,307 to 9,504 . Single-year sparse filers cannot show that trail.
| Plan year | Participants | EOY assets | Filing |
|---|---|---|---|
| 2022 | 9,307 | $2.7B | Open filing |
| 2022 | 8,851 | $2.7B | Open filing |
| 2023 | 9,356 | $3.0B | This page |
| 2024 · index core | 9,504 | $3.2B | Open filing |
The same sponsor also keeps 2 other index-core plans on PlainRetire:
- Ameren Retirement Plan (Defined Benefit (Pension), $4.8B, 9,760 participants)
- Ameren Corporation Savings Investment Plan (401(k), $3.2B, 9,504 participants)
Ameren Corporation Savings Investment Plan's out-of-state 401(k) peers by assets and headcount
Outside Missouri, the nearest 401(k) by assets is Wsp USA Retirement Savings Plan in NY ($3.0B); by covered participants it is Block 401(k) Plan in CA (9,358 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($3.0B here).
- Wsp USA Retirement Savings Plan (NY) $3.0B · 16,239
- U.S. Associate Savings Plan (NJ) $3.0B · 14,224
- Iowa Health System Section 401(k) Retirement Savings Plan (IA) $3.0B · 28,959
- Xcel Energy 401(k) Savings Plan (MN) $2.9B · 9,334
Similar participant headcount
Nearest other-state filings by covered participants (9,356 participants); asset peers above are excluded.
- Block 401(k) Plan (CA) 9,358 · 2 off
- Zurich Savings Plan (IL) 9,352 · 4 off
- Blue 401(k) Plan (WA) 9,361 · 5 off
- Motorola Solutions 401(k) Plan (IL) 9,365 · 9 off
DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.